The Jack Wolfskin Ham Rock 12 Backpack is all that you will need for your outdoor sports activites, including hiking, running and more. Coming with a main compartment with inside pocket (with enough room for a drinks bladder), front pocket with key clip, two elasticated side pockets. Also coming with an adjustable chest strap with signal whistle. Other features include: Trekking pole lashing option. Attachment for a bike pump and bottle. Anchor loop for flashing LED light. Reflectors. Set-up for a hydration system (tube duct and attachment). Integrated raincover in base compartment. Volume: 12 Litres. Dimensions: 44cm x 25cm x 19 cm. Colour: Blue Material: Polyester, Nylon Code: 2002343-1121